What is the social security registration number?

Social security number. According to the inquiry method, the social insurance registration number is the social security number, which is the code on the social security registration certificate issued to the enterprise by the social security center after the enterprise completes the social security registration. The social insurance registration number is 18 unified social credit code on the business license. You can go to the local social security bureau to inquire, or you can go to the company's personnel department for consultation.